Sulphobetaines strongly basic

Sulphonates (sulphobetaines) with strongly basic N (SS). Having neither weak acid nor weak base groups, these can exist only in the zwitterionic form, whatever the pH of the solution. [Pg.23]

Anionic (sulphate or sulphonate) Amphoteric excluding betaine (WW) Quaternary ammonium salt Betaine, amine, amine oxide Sulphobetaine with strongly basic N Nonionic... [Pg.25]

Evaporate both solutions to a low volume, dilute to about 10 ml with water and carry out the indicator test on small portions of each of them in both acid and alkaline solution. The solution from the cation exchange column contains only anionics, soaps, SW and SS sul-phobetaines and nonionics, and the solution from the anion exchange column contains only cationics with both weakly and strongly basic nitrogen, betaines, SS sulphobetaines and nonionics. WW amphoterics are retained by both columns. [Pg.25]

Nonionics and/or sulphobetaines present, all other amphoterics absent. Retain all anionics on a strongly basic anion exchanger, e.g. Bio-Rad AG 1-X4 hydroxide, and elute with at least 25 bed-volumes of... [Pg.96]

Anionics andtor WW and SW amphoterics present, cationics, nonionics and sulphobetaines absent. Retain the anionics and other amphoterics on a strongly basic anion exchanger hydroxide. The effluent contains the betaine in the zwitterionic form plus non-surfactant cations as their hydroxides or free bases. [Pg.100]

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